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Semiquantification of macrophage accumulation in optical frequency domain imaging (OFDI). Representative cross–sectional OFDI images with the following grades: a grade 0, no macrophages; b grade 1, localized accumulation; c grade 2, clustered accumulation in < 1 quadrant; d grade 3, clustered accumulation in ≥ 1 and < 3 quadrants; and e grade 4, clustered accumulation in ≥ 3 quadrants
